<!DOCTYPE html>
<html>
<head>
<style> 
div
{
width:100px;
height:75px;
background-color:yellow;
border:1px solid black;
}
div#div2
{
transform:matrix(0.866,0.5,-0.5,0.866,0,0);
-ms-transform:matrix(0.866,0.5,-0.5,0.866,0,0); /* IE 9 */
-moz-transform:matrix(0.866,0.5,-0.5,0.866,0,0); /* Firefox */
-webkit-transform:matrix(0.866,0.5,-0.5,0.866,0,0); /* Safari and Chrome */
-o-transform:matrix(0.866,0.5,-0.5,0.866,0,0); /* Opera */
}
</style>
</head>
<body>

<div>你好。这是一个 div 元素。</div>

<div id="div2">你好。这是一个 div 元素。</div>

</body>
</html>
